The Congressional Research Service has prepared reports on various aspects of the U.S. Supreme Court nominations process, including these:

Speed of Presidential and Senate Actions on Supreme Court Nominations, 1900-2010, August 6, 2010

Supreme Court Appointment Process: Roles of the President, Judiciary Committee, and Senate, February 19, 2010

Supreme Court Nominations Not Confirmed, 1789-August 2010, August 20, 2010

Supreme Court Nominations: Senate Floor Procedure and Practice, 1789-2011, March 11, 2011

Supreme Court Appointment Process: President’s Selection of a Nominee, October 19, 2015

Supreme Court Appointment Process: Consideration by the Senate Judiciary Committee, October 19, 2015

Supreme Court Appointment Process: Senate Debate and Confirmation Vote, October 19, 2015

Questioning Supreme Court Nominees About Their Views on Legal or Constitutional Issues: A Recurring Issue, June 23, 2010

Supreme Court Justices: Demographic Characteristics, Professional Experience, and Legal Education, 1789-2010, April 9, 2010